Multiple Choice
Some bacteria remain metabolically active in hot springs at temperatures above . These bacteria are best classified as which type based on temperature requirements for growth?
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10. Dynamics of Microbial Growth
Temperature Requirements for Microbial Growth
Multiple Choice
Which group of bacteria is capable of growing at cold temperatures (e.g., around 0–15°C) and often has an optimum growth temperature below 15°C?
A
Mesophiles
B
Hyperthermophiles
C
Thermophiles
D
Psychrophiles
Verified step by step guidance1
Understand the classification of bacteria based on their temperature growth ranges: Psychrophiles, Mesophiles, Thermophiles, and Hyperthermophiles.
Recall that Psychrophiles are bacteria that thrive at cold temperatures, typically between 0°C and 15°C, with an optimum growth temperature below 15°C.
Recognize that Mesophiles prefer moderate temperatures, usually between 20°C and 45°C, which is higher than the cold range specified.
Note that Thermophiles and Hyperthermophiles grow at much higher temperatures, generally above 45°C and 80°C respectively, so they are not adapted to cold environments.
Conclude that the group capable of growing at cold temperatures around 0–15°C with an optimum below 15°C is Psychrophiles.
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